8861660 has 24 divisors (see below), whose sum is σ = 19211136. Its totient is φ = 3430080.

The previous prime is 8861659. The next prime is 8861663. The reversal of 8861660 is 661688.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8861660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8861663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6527 + ... + 7766.

It is an arithmetic number, because the mean of its divisors is an integer number (800464).

Almost surely, 2^8861660 is an apocalyptic number.

It is an amenable number.

8861660 is an abundant number, since it is smaller than the sum of its proper divisors (10349476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8861660 is a wasteful number, since it uses less digits than its factorization.

8861660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14333 (or 14331 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 8861660 is about 2976.8540441211. The cubic root of 8861660 is about 206.9371011646.

The spelling of 8861660 in words is "eight million, eight hundred sixty-one thousand, six hundred sixty".